We seem to be talking about Del Rio as if his career is effectively over.
As fans, we're a fickle bunch and Del Rio could stay in his mid table position until he inevitably leaves or retires, however there's also a very good chance that he could, whether through a gimmick change or just a nice run of matches/wins, elevate himself back up to a legitimate main event status.
He needs to recapture that energy and intensity he had during the Mysterio feud where you believed that he really hated Rey and lgenuinely wanted to hurt him more and more with every beatdown.